I’m suggesting that increasing complexity and nuance present in a substrate such as language is a prerequisite for high intelligence because high intelligence i

I’m suggesting that increasing complexity and nuance present in a substrate such as language is a prerequisite for high intelligence because high intelligence in individuals is a feature of groups, not individuals. One person alone is without language and without advanced tools, no matter how big their brains. See feral children. It is possible that cetaceans pushed long ago pushed past complex verbosity into communication via wisdom and are all enlightened beings. Maybe they communicate electrically. Maybe they are in a local maximum of telepathic connection. I hope so.